The paper addresses a set of questions related to Armenia's integration preferences. For four years since 2009, following the objectives of the EaP declaration, the Armenian Government carried out a series of political and socioeconomic reforms aimed to facilitate approximation toward the EU. However, on 3 September 2013, the president of Armenia shifted the long-praised process of initialing political association and economic integration with the European Union and announced Armenia’s decision to join the Russia-led Customs Union and participate in the processes of formation of the Eurasian Economic Union (EAEU). Practitioners and observers interpreted it either as a U-turn or as a surprise move mainly assuming that what happened was the result of Russian pressure on Armenia. However, when tensions and uncertainty eased, it became obvious that what happened was a result of complex reasons. Geopolitical constraints and socio-political problems that had accumulated in Armenia during recent years coincided with an assertive expansion of Russia’s foreign policy.